126533 has 4 divisors (see below), whose sum is σ = 138048. Its totient is φ = 115020.

The previous prime is 126517. The next prime is 126541. The reversal of 126533 is 335621.

126533 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126533 - 2⁴ = 126517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5741 + ... + 5762.

It is an arithmetic number, because the mean of its divisors is an integer number (34512).

2¹²⁶⁵³³ is an apocalyptic number.

It is an amenable number.

126533 is a deficient number, since it is larger than the sum of its proper divisors (11515).

126533 is a wasteful number, since it uses less digits than its factorization.

126533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11514.

The product of its digits is 540, while the sum is 20.

The square root of 126533 is about 355.7147733789. The cubic root of 126533 is about 50.2035700598.

The spelling of 126533 in words is "one hundred twenty-six thousand, five hundred thirty-three".